current methods for the determination of methylxanthines in the biological fluids

... assistance in providing information regarding the cocoa industry in Vietnam and in the establishment of solar driers and fermenting boxes at their demonstration farm sites in Ben Tre Province HARVESTING ... darken in colour during drying as the majority of browning reactions will occur during this process DRYING OF COCOA Drying of cocoa is an important step in cocoa processing as some of the reactions ... on the percentage of fully brown beans in the cut test 6: The effect of spreading of beans for two hours, prior to placement in boxes, on fermentation temperatures 7: The effect of spreading of...

Ngày tải lên: 21/06/2014, 06:20

... we obtain the existence of a mapping c : G → Y such that the following hold i c is a fixed point of J, that is, c x F x, c η x ∀x ∈ G , 4.13 The mapping c is the unique fixed point of J in the set ... Proceedings of the National Academy of Sciences of the United States of America, vol 27, no 4, pp 222–224, 1941 T Aoki, “On the stability of the linear transformation in Banach spaces,” Journal of the ... also the recent articles of Forti 16, 17 , for supplementary details On the other hand, in 18–25 , a fixed point method was proposed, by showing that many theorems concerning the stability of Cauchy,...

Ngày tải lên: 22/06/2014, 06:20

... Comparison of Diagnostic Methods for the Detection of Parasites in Fish and disadvantages, depending on the purpose and target of study For parasitological investigation, the classical methods (the ... microscope Stretching of these metacercariae was done by hot formalin for two minutes Then, they were kept in Eppendorf tubes with neutral formalin (4%) Diagnosis of parasitic infections * Diagnosis ... saline pH 7.0) The internal organs were exposed after a vertical incision was made from the anal opening to the Before any dissection, the exterior of the fish was observed under the dissecting...

Ngày tải lên: 06/08/2014, 19:20

... centralization of proces­ sing at a dedicated single site bring benefits in robustness of the data trail, reduced cost and increased achievable throughput and accuracy of sample handling and picking; for ... substantial effort should be directed into training of staff to agreed and validated operating procedures and in monitoring their performance to ensure quality standards are maintained Cross-validation ... time consuming During the design stage, it is therefore important to consider whether collection of additional samples will have the potential to produce useful data in the future, either as an...

Ngày tải lên: 11/08/2014, 12:21

... from the quantity of water formed during the reaction The fraction of the various forms of hydrogen can be determined from the ratios of the areas of the corresponding peaks The technique, implying ... the difficulty of determining the exact end point of titration and to the presence of traces of moisture Other disadvantages a r e the impossibility of making determinations in the real working ... The combination of the information obtainable from two o r more of them can often be the only way to give a complete picture of the surface acid properties of the solid under examination 11 DETERMINATION...

Ngày tải lên: 29/07/2015, 02:27

... read may span the breakpoint of the CNV SR analysis has the advantage of being able to pinpoint the location of the breakpoints Assembly-based AS methods, on the other hand, not align the reads to ... one of the highest performing method used in the 1000 Genomes pilot Project, indicating that there is benefit in combining different approaches (Mills et al., 2011) Depth of coverage DOC methods ... that the costs associated with down-handling, storing and analysis of the data could be more than the production of the data There is still a need for the development of new statistical/bioinformatics...

Ngày tải lên: 09/09/2015, 10:14

... Summary the combination of amino acid spin-systems, (2) the determination of amino acid types for combined spin-systems, (3) the identification of sequential connections between these spin-systems, ... Assignment Using 4D NMR clustering in this thesis The aim of clustering is to accelerate the performance of the program In subsequent steps of constructing spin-systems and modifying established spin-systems ... essential in: (1) the structure determination of proteins, (2) intermolecular interactions, and (3) protein dynamics Firstly, consider the determination of protein structure from NMR data Protein chemical...

Ngày tải lên: 04/10/2015, 15:52

... signal in the flying height retrieval process The phase variation of the scanning current is recovered by detecting the envelope of the readback signal As the amplitude of the scanning current ... range of all the reading process based methods 2.2.2 Scanning Carrier Current Method for In- Situ Flying Height Measurement The scanning carrier current method works under the same principle of the ... of In- Situ Diagnosis Methods for the Evaluation of Mechanical and Magnetic Performance of Hard Disk Drives ZHU JIN （B.Eng (hons) HUST, P.R.China） A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF...

Ngày tải lên: 05/10/2015, 22:15

... for the determination of such compounds in milk The experimental results demonstrate that the procedure is simple to use and effective for the determination of OCPs in milk 28 CHAPTER Determination ... clean up steps are becoming increasingly significant in restraining detection limits of analytical methods[ 2] In the last decade or so, there have renewed interests in developing analyte isolation ... first introduced in segmented-flow determination[ 1] It is based on the injection of a liquid sample into a moving, nonsegmented continuous carrier stream of a suitable liquid Then the injected...

Ngày tải lên: 22/10/2015, 21:08

... uncertainty of the determinations of the analyte contents of both the test sample and the blank value The magnitude of both the uncertainties of the results for the test sample and the blank value are influenced ... evaluating and monitoring of blank values, which allow the estimation of the mean value of the blank value as well as the corresponding standard deviation [ 21] The number of determinations of the ... in relation to the determinations of the test sample is important with regard to the uncertainty of the blankvalue-corrected-result of the test sample, which is equal to the combined uncertainty...

Ngày tải lên: 06/10/2016, 09:27

... of 95 ml) The A280 to A260 ratio of the UV-absorbing peak indicated it was composed mainly of nucleic acid In the profile of the NaOH-extracted polymer (B), the elution volume (80 ml) of saccharide ... shaking, absorbance at 660 nm (A660) was measured for min, and the relative A660 against the control test was calculated every minute using the following formula: The relative A660 = A660 of flocculating ... Ag-protein stain, the components varied greatly by polymer Several bands demonstrated the same mobility in both stains, suggesting that these bands were complexes of protein and saccharide These included...

Ngày tải lên: 05/09/2013, 09:08

... evaluation of lexical association measures, mainly for the following reasons: the instability of precision values obtained from the rst few percent of the data in the SLs; the lack of signicant ... obtain condence intervals for the true precision values of the bestperforming AM (frequency), given our 10% sample The upper and lower bounds of the 95% condence intervals are shown as thin lines ... different from the baseline obtained by random selection In contrast to our expectation stated at the beginning of this section, the performance of and relative to the other AMs is not better for high-frequency...

Ngày tải lên: 20/02/2014, 18:20

... spins By linearity of the Fourier transform the direct relation between the peak integral and the number of spins of the corresponding chemical group holds for the spectrum of superposed lines ... real, the oscillating imaginary part of the sum in general leads to a small imaginary part of Qn The maximum of the real part of the sum is N times higher than the amplitude of the oscillating ... /: (2.47) For n D N=2 the origin is such that QN=2 is dominated by r/ in the vicinity of the right boundary of the FOV Still for a rather coarse discretization of N D 32 the corresponding sum is...

Ngày tải lên: 29/05/2014, 18:32

... improving the efficiency of troop movement During the 1950s there was a need for an improved understanding of locomotion for the treatment of World War II veterans The classic work at the University of ... skin The movement of the markers is typically used to infer the underlying relative movement between two adjacent segments (e.g knee joint) with the goal of precisely defining the movement of the ... optimal weighting of the markers according to their degree of deformation Another extension of the basic PCT corrects for error induced by segment deformation associated with skin marker movement...

Ngày tải lên: 19/06/2014, 10:20

... description of the test procedure was lacking, the majority of the studies would benefit from improving their reporting of the study The chosen study designs were in all cases relevant for the data ... with the OECD reporting requirements, 22 out of 37 criteria The other three methods have each included less than half of the OECD reporting requirements in their list of criteria Some of the reporting ... aspects of the test method are included in their reports A more structured reporting format could ensure the reliability of the test data without limiting the researcher’s creativity in the design of...

Ngày tải lên: 21/06/2014, 03:20

... to enforce the pitch continuity in time For this, the fundamental frequencies of each combination C are mapped into music pitches, obtaining a pitch combination C For instance, the combination ... 141–156] In these figures, the cross point represents the values selected for the parameters Lines represent the impact tuning individual parameters when keeping the selected values for the rest of ... by applying some constraints, like a minimum intensity for a pattern One of the main contributions of this study is the extension of the core algorithm to increase the temporal coherence Instead...

Ngày tải lên: 21/06/2014, 17:20

... ) The main steps of the APM algorithm are the following: (i) select a starting short time window width Tmin ; (ii) apply the Prony method to the samples in the short time window to obtain the ... proper window is used The authors selected the Hanning window because of its good spectral characteristics and the simplicity of the interpolation formulas A brief review of the frequency domain interpolation ... as AEM In this paper, the methods based on the use of the DFT in the IEC framework are summarized Then, the methods based on Prony and ESPRIT theories are reviewed Finally, the results of several...

Ngày tải lên: 22/06/2014, 23:20

... conversion In- line distillation methods are used for the determinations of ammonia, fluoride, cyanide, phenols, and other volatile compounds In- line digestion can be used for the determination of total ... buffer solutions in the pH range of to The error resulting from inaccurate pH measurements grows with an increase in total alkalinity For example, an inaccuracy of 0.1 in the pH determination causes ... Analytical methods for the determination of cyanates in plating wastes Plating 39:381 23 GARDNER, D.C 1956 The colorimetric determination of cyanates in effluents Plating 43:743 24 Procedures for Analyzing...

Ngày tải lên: 29/07/2014, 18:58

... to margin; short spines often present around margin (valve view) 31b Area of prominent radial markings, in valve view, limited to Cyclotella approximately outer half of circle, marginal spines ... Standard Methods for the Examination of Water and Wastewater Agency, National Environmental Research Center, Cincinnati, Ohio PATRICK, R & C.W REIMER 1975 The Diatoms of the United States Exclusive of ... Water Environment Federation Standard Methods for the Examination of Water and Wastewater Algae General TAYLOR, W.R 1957 Marine Algae of the Northeastern Coast of North America, 2nd ed Univ Michigan...

Ngày tải lên: 29/07/2014, 18:58

... of Water and Wastewater Dinobryon © Copyright 1999 by American Public Health Association, American Water Works Association, Water Environment Federation Standard Methods for the Examination of ... Methods for the Examination of Water and Wastewater Pandorina © Copyright 1999 by American Public Health Association, American Water Works Association, Water Environment Federation Standard Methods ... for the Examination of Water and Wastewater Peridinium © Copyright 1999 by American Public Health Association, American Water Works Association, Water Environment Federation Standard Methods for...

Ngày tải lên: 29/07/2014, 18:58